Nilsawang, P., P. Steannoppakao, and A. Pheasa. “Effective Administrative on Early Childhood Education for Primary Schools under the Basic Education Commission Offices in the Northeast”. Dhammathas Academic Journal, vol. 22, no. 4, Dec. 2022, pp. 267-80, https://so06.tci-thaijo.org/index.php/dhammathas/article/view/257889.